From: Michal Sojka <sojkam1@fel.cvut.cz>
Date: Fri, 11 Sep 2015 13:57:26 +0000 (+0200)
Subject: Add git-ls-files-attr script
X-Git-Tag: eaton-0.7~5
X-Git-Url: http://rtime.felk.cvut.cz/gitweb/pes-rpp/rpp-lib.git/commitdiff_plain/b9c14221d9d95c415ea02c0ba34dbf87d90ddbaf

Add git-ls-files-attr script

Use this script  in makefiles where we used custom shell code before.
---

diff --git a/Makefile b/Makefile
index 62551c7..16188fe 100644
--- a/Makefile
+++ b/Makefile
@@ -44,7 +44,7 @@ subdir-build/%: print-targets
 	$(MAKE) -C $(@:subdir-%=%) $(MAKECMDGOALS)
 
 
-UNCRUSTIFY_FILES = $(shell git ls-files|git check-attr --stdin uncrustify|awk -F: '/uncrustify: set$$/ {print $$1}')
+UNCRUSTIFY_FILES = $(shell etc/git-ls-files-attr uncrustify)
 UNCRUSTIFY_CFG = etc/uncrustify.cfg
 define UNCRUSTIFY_ALL
 $(foreach i,$(UNCRUSTIFY_FILES),git show HEAD:$i | uncrustify -c $(UNCRUSTIFY_CFG) -o $i
diff --git a/common.mk b/common.mk
index 21be655..ef9dcf8 100644
--- a/common.mk
+++ b/common.mk
@@ -30,7 +30,7 @@ endif
 
 # `make release` can ignore files without certain git attribute
 RELEASE_IGNORE_FILES_CMD = $(strip $(if $(RELEASE_ATTR),\
-	git ls-files | git check-attr --stdin $(RELEASE_ATTR)|awk -F: '!/$(RELEASE_ATTR): set$$/ {print $$1}',\
+	etc/git-ls-files-attr --not $(RELEASE_ATTR),\
 	$(if $(filter RELEASE_ATTR,$(.VARIABLES)),,$(error Please specify RELEASE_ATTR variable (it can be empty)))))
 
 # Usage: $(call release_rules,<release_prefix>)
diff --git a/etc/git-ls-files-attr b/etc/git-ls-files-attr
new file mode 100755
index 0000000..7995b11
--- /dev/null
+++ b/etc/git-ls-files-attr
@@ -0,0 +1,31 @@
+#!/bin/sh
+
+usage() { echo >&2 "Usage: $0 [ --not ] [ --set | --unset | --unspecified ] <attr> <ls-files args>..."; }
+
+state=set
+
+if test $1 = "--not"; then
+	not=true
+	shift
+else
+	not=false
+fi
+
+
+case $1 in
+    --set)         state=set;         shift;;
+    --unspecified) state=unspecified; shift;;
+    --unset)       state=unset;       shift;;
+    -*) usage; exit 1;;
+esac
+
+if test -z "$1"; then usage; exit 1; fi
+
+attr=$1
+shift
+
+git ls-files "$@" | git check-attr --stdin $attr | if $not; then
+	awk -F': ' -v state=$state '{ if ($3 != state) print $1 }'
+else
+	awk -F': ' -v state=$state '{ if ($3 == state) print $1 }'
+fi